Do you remember which or chat you might have downloaded this from?
The filename follows a naming convention typically used by Telegram for media files (specifically video files in the Matroska format). AgADygADo-p4Rw.mkv
: Check your Telegram -> Telegram Video folder. The file was likely sent in a chat or channel you follow. Do you remember which or chat you might
: This prefix is a unique identifier used in Telegram's internal file system. The file was likely sent in a chat or channel you follow
Because these names are randomly generated IDs assigned by Telegram's servers, it is impossible to know the specific content of the video without more context. However, here is what the filename tells us:
, you can try opening the file with a versatile media player like VLC Media Player or MPC-HC, which are capable of reading .mkv files even if they have metadata issues.